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下列函数中是奇函数的是( ) A. B. C. D.f(x)=1-4x+2x2
下列函数中是奇函数的是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225150215055544/SYS201311012251502150555004_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225150215055544/SYS201311012251502150555004_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225150215055544/SYS201311012251502150555004_ST/2.png)
D.f(x)=1-4x+2x
2
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